Trace metal bioaccumulation in eight common coastal Australian polychaeta

Waring, Joel; Maher, William A.; Krikowa, Frank

doi:10.1039/b612509n

Cited by 16 publications

(7 citation statements)

References 21 publications

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“…Comparing accumulation of metals in Polychaete species in this study with other studies in the Black Sea (Table 6), it can be seen that Waring et al (2006) recorded higher concentrations of Hg and Cd in Australonuphis parateres of Australia coasts, whereas Dora et al (2007) (Andreev et al, 1994) and high Zn values were recorded in Perinereis cultrifera from Venetian lagoon-Italy (Volpi Ghirardini et al, 1999). Our values of these metals were lower than those in other studies (Table 6).…”

Section: Discussionsupporting

confidence: 47%

Assessment of Heavy Metals Pollution in Water and Sediments and Polychaetes in Sinop Shores of The Black Sea

Bat

Şahin

Öztekin

2019

Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi

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In this study four Polychaetes species namely Capitella capitata, Nereis zonata, Platynereis dumerilii and Perinereis cultrifera were selected to evaluate metal pollution in Karakum shores of Sinop Peninsula in the southern Black Sea. The Hg, Cd, Pb, Cu and Zn amounts in water, sediment as well as their existence in Polychaetes were studied to appraise the anthropogenic impact on their environment. Metals concentrations in water were found in the following order: Zn > Cu > Pb > Cd > Hg, whereas the order of abundance of these metals in sediments were as follow Zn > Cu > Pb > Hg >Cd. There were no differences in heavy metal levels in sediment between seasons. The concentration of metals analysed in the Polychaete species showed same pattern. Zn showed the highest concentration in all species followed by Cu. The results showed that the heavy metal levels in C. capitata were much higher than those in N. zonata, P. dumerilii and P. cultrifera.

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Section: Discussionsupporting

confidence: 47%

Assessment of Heavy Metals Pollution in Water and Sediments and Polychaetes in Sinop Shores of The Black Sea

Bat

Şahin

Öztekin

2019

Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi

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“…G . caespitosa is a filter-feeding species, which is able to accumulate hazardous substances through the uptake of suspended particulate matter during the water exchange involved in foraging activities [3, 7]. …”

Section: Introductionmentioning

confidence: 99%

Detailed analysis of the male reproductive system in a potential bio-indicator species – The marine invertebrate Galeolaria caespitosa (Polychaeta: Serpulidae)

Aitken

Lin

2017

PLoS ONE

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For the first time, this study has systemically investigated the male reproductive system in a sessile broadcast-spawning marine invertebrate, Galeolaria caespitosa (Polychaeta: Serpulidae), which has significant potential as a bio-indicator species of coastal marine pollution. The abdomen of G. caespitosa was divided by intersegmental septa into over 80 trunk segments. Each segment served as a germinal chamber with a C-shaped gonadal arrangement consisting of several distinct compartments: a seminiferous epithelium (SE) compartment located in the centre of the chamber, with each of its two ends connecting to a nurse cell (NC) compartment and then an efferent duct (ED) compartment. The SE compartment contained a multilayered seminiferous epithelium where spermatogenesis was initiated. Spermatids were released in pairs into the lumen of the SE compartment and then transported to the NC compartment where they underwent spermiogenesis with the support of secretory vesicles released by the nurse cells. Spermatozoa were stored in the ED compartment and subsequently released into the seawater through the vas deferens. Unlike vertebrates where germ cells differentiated in close proximity to the nurse cell population (i.e. Sertoli cells), the spermatogenic cells of G. caespitosa exhibited no direct contact with supporting cells at any spermatogenic stage. This finding suggested that the spermatogenesis in G. caespitosa was more dependent on intrinsic developmental programming than most species. Notwithstanding such differences, there were clear parallels between the male reproductive system of G. caespitosa and mammals, in terms of the structure and function. The independence of spermatogenic cells from supporting cells in G. caespitosa raised the possibility of inducing spermiogenesis in vitro, which would provide a useful tool to dissect the mechanisms underlying this complex cell differentiation process in invertebrates and other higher order animals.

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“…gemineoa maximises its exposure to suspended hazardous substances in the ambient water as they process large volume of water during foraging activities [ 7 ]. Waring et al [ 8 ] demonstrated that this species had a higher capacity to accumulate toxic heavy metals including mercury, silver and zinc compared with several other marine polychaetes tested ( Australonereis ehlersi , Australonuphis parateres , Lumbrinereis spp., Marphysa spp., Notomastus estuaries , Scoloplos simplex , and Sigalion spp.). In reproductive terms, adult male and female G .…”

Section: Introductionmentioning

confidence: 99%

Ultrastructural investigation and in vitro recapitulation of spermatid differentiation in a potential bio-indicator species – The marine invertebrate Galeolaria gemineoa (Polychaeta: Serpulidae)

Aitken

Lin

2017

PLoS ONE

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Galeolaria gemineoa is a sessile broadcast-spawning marine invertebrate, whose spermatozoa have been regarded as a sensitive indicator for water quality monitoring. In this study, 10 steps of spermiogenesis have been identified at the ultrastructural level and this differentiation process has been recapitulated in vitro up to the point of spermiogenesis (step 7–9 spermatids). On completion of the second meiosis, newly formed spermatids were detached from the seminiferous epithelium and released to the lumen of each germinal chamber. These spermatids were present in pairs and interconnected by a cytoplasmic bridge throughout the entire spermiogenic process. On the basis of morphological events such as formation of the acrosome, elongation of the flagellum, and condensation of the nucleus, spermiogenesis has been temporally divided into Golgi phase, acrosomal phase and maturation phase. During the Golgi phase, proacrosomal vesicles appeared at the posterior pole of the spermatids and gradually fused into a proacrosomal vacuole. Simultaneously, the distal centriole docked onto the plasma membrane and gave rise to a formative flagellum. The acrosomal phase was characterised by differentiation of the acrosome, condensation of the chromatin and formation of a mitochondrial sheath surrounding the initial portion of the flagellum. During the maturation phase, the fully differentiated acrosome migrated to the anterior pole and excess cytoplasm was extruded from the spermatids in the form of residual bodies. In addition, we successfully induced step 1–3 spermatids to differentiate into the step 7–9 spermatids in both male germinal fluid and 10% foetal bovine serum in RPMI 1640 medium, but failed to replicate this process in female or boiled male germinal fluids. This finding supports our concept that spermatid differentiation in this species is dependent on intrinsic developmental programming and does not require input from accompanying nurse cells.

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Trace metal bioaccumulation in eight common coastal Australian polychaeta

Cited by 16 publications

References 21 publications

Assessment of Heavy Metals Pollution in Water and Sediments and Polychaetes in Sinop Shores of The Black Sea

Assessment of Heavy Metals Pollution in Water and Sediments and Polychaetes in Sinop Shores of The Black Sea

Detailed analysis of the male reproductive system in a potential bio-indicator species – The marine invertebrate Galeolaria caespitosa (Polychaeta: Serpulidae)

Ultrastructural investigation and in vitro recapitulation of spermatid differentiation in a potential bio-indicator species – The marine invertebrate Galeolaria gemineoa (Polychaeta: Serpulidae)

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